Slim 3 - replacement for isPost()? - slim

Question

In Slim 2, I would do this,
$app->map('/login', function () use ($app) {
// Test for Post & make a cheap security check, to get avoid from bots
if ($app->request()->isPost() && sizeof($app->request()->post()) >= 2) {
//
}
// render login
$app->render('login.twig');
})->via('GET','POST')->setName('login');
But in Slim 3,
// Post the login form.
$app->post('/login', function (Request $request, Response $response, array $args) {
// Get all post parameters:
$allPostPutVars = $request->getParsedBody();
// Test for Post & make a cheap security check, to get avoid from bots
if ($request()->isPost() && sizeof($allPostPutVars) >= 2) {
///
}
});
I get this error,
Fatal error: Function name must be a string in C:...
Obviously that isPost() is deprecated, so what should I use instead in Slim 3 for isPost's replacement?

Answer 1

In Slim 4, there's no such helper and so the syntax gets longer (like a lot of Slim 4 stuff):
$request->getMethod() === 'POST'

Answer 2

According to documentation and comments, Slim supports these proprietary methods:
$request->isGet()
$request->isPost()
$request->isPut()
$request->isDelete()
$request->isHead()
$request->isPatch()
$request->isOptions()
Here it is an example of usage:
<?php
require 'vendor/autoload.php';
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;
$app = new \Slim\App;
$app->map(['GET', 'POST', 'PUT', 'DELETE', 'HEAD', 'PATCH', 'OPTIONS'], '/', function (ServerRequestInterface $request, ResponseInterface $response) {
echo "isGet():" . $request->isGet() . "<br/>";
echo "isPost():" . $request->isPost() . "<br/>";
echo "isPut():" . $request->isPut() . "<br/>";
echo "isDelete():" . $request->isDelete() . "<br/>";
echo "isHead():" . $request->isHead() . "<br/>";
echo "isPatch():" . $request->isPatch() . "<br/>";
echo "isOptions():" . $request->isOptions() . "<br/>";
return $response;
});
$app->run();